Light Bulbs in Series vs Parallel · PhysicsBowl 2017 #29
Physics · electromagnetism
Problem
Two lightbulbs (X and Y) are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X and Y are connected in parallel with each other to the same battery, which one of the following choices best represents what is observed?| Bulb X | Bulb Y | Comparison | |
|---|---|---|---|
| (A) | Brightens | Brightens | Bulb X remains brighter than bulb Y |
| (B) | Brightens | No Change | Bulb X remains brighter than bulb Y |
| (C) | Dims | Brightens | Bulb X remains brighter than bulb Y |
| (D) | Dims | Brightens | Bulb Y now is brighter than bulb X |
| (E) | Brightens | Brightens | Bulb Y now is brighter than bulb X |